I understand and agree with Bubba's original point: Pizza won't ever be made/taste like it used to. However, I'm pretty sure that is a good thing!
My trade is building and remodeling houses. When I started, I heard someone say to my boss at the time, "Man! They just don't build them like they used to, do they?" To which my boss replied, "No, and it's a good thing. They build them a lot better." Being on the west coast, I have worked on houses as much as 100 yrs old. I would take a modern house any day. I can't imagine all the isssue you would find in an east coast home that is up to 200 years old. Even the best of carpenters from that time were working with old methods, ancient technology and outdated techniques.
Sure, there are guys today who take advantage of the wealth of building info and technology today and make a piss-poor house because they can. They are the building equivilent of Dominos. However, those of us who care to take the time to study, learn, and apply that knowledge, and keep abreast of new information can make a house that is tighter, better, and longer lasting than any older home, no matter how much old growth lumber might have been used.
The same is true of pizza. How did you know when your oven was hot enough back then? See how fast a peice of parchment burned? Now we use an infrared thermometer. We know more about how to grind flour now. We handle our food smarter. Though it is misused at times, we genetically engineer it to taste better. Anyone who doubts this should go to a corn museum and see how they would like the taste of a tiny, pitiful old corncob. (I wonder if they have corn museums?)
I'm not sure where people's belief in the "good ol' days" comes from. I read a study once that showed that older folks have a harder time remembering bad memories than good ones. Today, we live longer, are healthier(doubt it? Look at the preceding item!), more connected, more civilized and just plain happier than we used to be as a society. Ok, I'm getting away from pizza. Sorry.
Me? I'll take modern food and modern know-how any old day.